Many times I have to look stuff up on the internet about how to do something for my art. I was googling about pixels and sizing for photo editing of my paintings. And I ran across this site called Greenpix's Blog with really cool info and photos explaining sizing, color adjustment, using a macro lens etc. He explains the technical information well in simple terms. I am always trying to learn more and improve my photography skills for achieving better photos of my art. Plus, photography is art unto itself and I do enjoy it. So here is a link I want to share with you that I found that might be helpful to you.